共 1 条
[1]
Tectonics in Northern Xinjiang and Its Neighbouring Areas. Xiao XC, Tang YQ, Feng YM, et al. Geological Publishing House . 1992
Discovery of Caledonian island-arc granodiorite-tonalite in Buqingshan, Qinghai Province
被引：5
作者：
边千韬
罗小全
李涤徽
赵大升
陈海泓
徐贵忠
常承法
高延林
机构：
[1] Institute of Geology
[2] Chinese Academy of Sciences
[3] Beijing
[4] China
[5] Science Press
[6] Department of Planning
[7] Commission of Science and Technology
[8] Xining
关键词：
Buqingshan;
granodiorite-tonallte;
Early Paleozoic;
tectonics;
D O I：
暂无
中图分类号：
P534 [各时代地史及其地层];
学科分类号：
070903 ;
摘要：
<正> The granodiorite-tonalite rock occurred in ophiolitic melange was discovered in Buqingshan area, Qinghai Province. Its Rb-Sr isochron age is 578.15±54.4 Ma which belongs to Early Paleozoic. The rock, belonging to calcic-alkaline series, has the features of island-arc granite, which hints-that oceanic crust subduction and island-arc magmatism occurred in this area in Early Paleozoic. This discovery is of great significance to recognize the tectonic framework and evolution of this area even as far as the Central Orogenic Belt.
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页码：76 / 80
页数：5
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